Automatic lead curtain

The utility model discloses an automatic lead curtain belongs to the medical instrument field, including rectangle frame, a lead curtain, the 2nd lead curtain, controller, a lead curtain coils in thelast frame of rectangle frame, and a lead curtain connects the exercise machine structure that enables a lead curtain and launch, upwards roll downwards, the 2nd lead curtain coils in the lower frameof rectangle frame, and the 2nd lead curtain connects the 2nd exercise machine who enables the upwards expansion of the 2nd lead curtain, rolls downwards and constructs, a lead curtain front lower extreme installation light sensor a, light sensor b, the 2nd lead curtain is upper end installation light sensor c, light sensor d openly, exercise machine structure, the 2nd exercise machine structure,light sensor a, light sensor b, light sensor c, light sensor d are connected with the controller respectively. The utility model discloses can avoid human non - examination site to receive radioactiverays and shine according to